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3A Chemistry
Chemical bonds
Question | Answer |
---|---|
Group IA lose (oxidation) | 1e |
Group IIA lose (oxidation) | 2e |
Group IIIA lose (oxidation) | 3e |
Group VA gain (reduction) | 3e |
Group VIA gain (reduction) | 2e |
Group VIIA gain (reduction) | 1e |
All elements except helium s2 in Group VIIIA has | s2-p6 |
loss of electrons | oxidation, positive charge |
Gain of electrons | reduction, negative charge |
an atom that has gained or lost electrons | Ion |
cation | positive charge |
Anion | negative charge |
Positive ion name does | not change |
Negative ion name does | change to ide |
The ability of an atom to attract electrons | Electronegativity |
non metals on the right hand side tend to have | High electronegativity |
Metals on the left hand side tend to have | Low electronegativity |
Covalent | 0.4 or less, and no charges |
Polar covalent | 0.5-1.9, and partially -, partially + |
Ionic | 2.0 or more , -, + |
Higher number on electronegativity gets the | negative charge |
Lower number on electromagnetically gets the | positive charge |
two shared pairs of electrons -4 electrons | Double bonds |
Three shared pairs of electrons- 6 electrons | Triple bond |